| Marchtrenk to Navodari | 741.24 mi (1,192.90 km) |
| Marchtrenk to Negresti-Oas | 430.65 mi (693.06 km) |
| Marchtrenk to Nehoiu | 608.69 mi (979.59 km) |
| Marchtrenk to Ocna Mures | 473.19 mi (761.52 km) |
| Marchtrenk to Odobesti | 632.45 mi (1,017.83 km) |
| Marchtrenk to Odorheiu Secuiesc | 540.10 mi (869.21 km) |
| Marchtrenk to Oltenita | 662.33 mi (1,065.91 km) |
| Marchtrenk to Onesti | 608.05 mi (978.56 km) |
| Marchtrenk to Oradea | 371.63 mi (598.07 km) |
| Marchtrenk to Orastie | 457.34 mi (736.02 km) |
| Marchtrenk to Oravita | 420.00 mi (675.93 km) |
| Marchtrenk to Orsova | 461.02 mi (741.94 km) |
| Marchtrenk to Otelu Rosu | 430.71 mi (693.16 km) |
| Marchtrenk to Otopeni | 622.33 mi (1,001.54 km) |
| Marchtrenk to Ovidiu | 740.44 mi (1,191.63 km) |
